[Milsurplus] Unsoldered joints...
w4thq at cox.net
w4thq at cox.net
Mon May 15 11:44:23 EDT 2017
During the 1960's, NASA issued a Soldering Spec. that eliminated twisting wires around terminals. The requirement for making solder joints that depended only on the solder making the connection allowed bad terminations to be readily identified.
John W4THQ
---- "Kenneth G. Gordon" <kgordon2006 at frontier.com> wrote:
=============
On 15 May 2017 at 7:25, George Babits wrote:
> Un-soldered joints happened all the time. Nothing unique to surplus, or any
> specific radio. I had a Collins 32S-1 with an un-findable intermittent.
> Finally found that one connection INSIDE one of the IF transformers had
> never been soldered.
When I was working as an electronic tech at the University of Montana, one of our professors
had a very, very expensive Phillips research X-ray machine which would intermittantly shut
down.
That thing had something like 90 tubes in it.
After a long night of digging into it, I found a no-solder joint on a filament connection to a
critical tube socket in the power supply section buried at the very bottom of the unit, under at
least 4 layers of wiring.
I was pissed and the professor was pleased.
Ken W7EKB
---
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